Description of problem:
"keep_namespace" & "keep_namespace_on_error" should be added while installing ASB

Version-Release number of the following components:
openshift-ansible-3.7.0-0.196.0.git.0.27cd7ec.el7.noarch.rpm

How reproducible:
Always

Steps to Reproduce:
1. install OCP with ASB
2. check broker-config configmap in openshift-ansible-service-broker project when installation finished
# oc get configmap broker-config -o yaml -n openshift-ansible-service-broker


Actual results:
"keep_namespace" & "keep_namespace_on_error" are not added.

# oc get configmap broker-config -o yaml -n openshift-ansible-service-broker

    openshift:
      host: ""
      ca_file: ""
      bearer_token_file: ""
      sandbox_role: edit
      image_pull_policy: IfNotPresent
    broker:

Expected results:
"keep_namespace" & "keep_namespace_on_error" should be added

openshift:
  host: ""
  ca_file: ""
  bearer_token_file: ""
  image_pull_policy: IfNotPresent
  sandbox_role: "edit"
  keep_namespace: false
  keep_namespace_on_error: true
broker:

https://github.com/openshift/ansible-service-broker/blob/master/etc/example-config.yaml#L34

Additional info: